repl_send

Write text to a REPL session. Appends a newline by default.

SERVERClaude Mobile SOURCEalexgladkov/claude-in-mobile

High RISK CLASS

Category Execute

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/alexgladkov-claude-in-mobile/repl-send.md

WHAT IT DOES

What repl_send does on Claude Mobile

AI agents invoke repl_send to trigger actions in Claude Mobile. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call: builds kicked off, notifications sent, workflows started.

RISK

Why repl_send is rated High

Writing text to a REPL session sends input that gets executed by the REPL process. This is effectively executing arbitrary commands/code in an interactive session on a mobile device. The effects depend entirely on what is sent, and could include destructive operations, data exfiltration, or system modifications.

From the tool's definition Write text to a REPL session. Appends a newline by default.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs repl_send safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Claude Mobile, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For repl_send, this is the rule to start with:

repl_send Rate-limited

repl_send stays usable, but rate-capped: a runaway agent can't fire it dozens of times a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "repl_send": {
      "limits": [
        {
          "counter": "repl_send_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}

RATE-LIMIT THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Claude Mobile, apply this rule, and every repl_send call is checked against it from then on.

FAQ

Questions about repl_send

What does the repl_send tool do? +

Write text to a REPL session. Appends a newline by default. It is categorised as a Execute tool in the Claude Mobile MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on repl_send? +

Register the Claude Mobile MCP server in PolicyLayer and add a rule for repl_send: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches Claude Mobile. Nothing to install.

What risk level is repl_send? +

repl_send is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.

Can I rate-limit repl_send? +

Yes. Add a rate_limit block to the repl_send rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.

How do I block repl_send completely? +

Set action: deny in the PolicyLayer policy for repl_send. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.

What MCP server provides repl_send? +

repl_send is provided by the Claude Mobile MCP server (alexgladkov/claude-in-mobile). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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